Does anyone know what happened to EasyJet's Berlin to Ljubljana route? It no longer seems to be appearing on the website. Did they cancel it?

The unfortunate answer is "yes".
http://www.gzs.si/eng/news/sbw/head.asp?idc=20628

Well crap, that just totally messed up some trip planning. Back to the drawing board!

"Well, crap..." That made me laugh, Joe, because the same thing happened to me when Easyjet cut back on its flights to Krakow, and Sterling quit flying Munich to Copenhagen, after I'd made a whole lot of reservations based on those flights. The changes created a domino effect on my itinerary that took a great deal of time and effort to straighten out. I hope you find a satisfactory resolution without too much difficulty.

Thanks. I think mine is pretty easy to fix. Ljubljana would be a great overnight trip or weekend trip, since it seems pretty compact and could be seen in 2-3 days. But it's frustrating to start thinking of an itinerary and then have it messed up.

I too had planned on flying EasyJet from Berlin. I now am flying to Zagreb on German Wings instead.